package com.whu.exp1jsp.controller;

import com.whu.exp1jsp.dao.ProductDAO;
import com.whu.exp1jsp.dao.PurchaseDAO;
import com.whu.exp1jsp.pojo.UserSt;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.sql.SQLException;

@WebServlet(name = "deleteProductServlet", value = "/deleteProduct-servlet")
public class DeleteProductServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        request.setAttribute("mode", 1);

        HttpSession session = request.getSession();
        Long productId = Long.parseLong(request.getParameter("productId"));
        if(productId == null){
            request.setAttribute("errorMessage", "商品不存在");
            request.getRequestDispatcher("index.jsp").forward(request, response);
            return;
        }

        UserSt user = session.getAttribute("user") == null ? null : (UserSt) session.getAttribute("user");
        if (user == null){
            request.setAttribute("error", "请先登录");
            request.getRequestDispatcher("login.jsp").forward(request, response);
            return;
        }

        ProductDAO productDAO = new ProductDAO();
        try {
            productDAO.deleteProduct(productId);
        } catch (SQLException e) {
            e.printStackTrace();
        }

        request.setAttribute("successMessage", "更新成功");
        request.getRequestDispatcher("my-servlet").forward(request, response);

    }
}
